---
title: "Prerequisites"
url: https://docs.catalyst.zoho.com/en/tools/tunneling/implementation/prerequisites/
description: "Catalyst Tunneling allows you to debug Non-HTTPS and Integration functions by routing function calls to your local system using a rever-proxy provider's tunneling URL."
last_updated: 2026-08-17T12:16:04Z
service: All Services
type: general
---

# Prerequisites

The following conditions need to be satisfied, for you to debug your non-HTTPS and Integration functions:

1. If your reverse-proxy provider requires certain specific steps like the installation of their CLI, complete them before starting with the implementation. For example, if your reverse-proxy provider is [Ngrok](https://ngrok.com/), then you need to install their CLI.

![catalyst_tunneling_ngrok_install_success](https://catalyst-docs-development.zohostratus.in/images/catalyst-extension/tunneling/catalyst_tunneling_ngrok_install_success.webp)

> **Note:** You can find detailed steps to generate Tunneling URL for the some of the more common reverse-proxy providers like: 

* [Ngrok](https://docs.catalyst.zoho.com/en/tools/tunneling/implementation/generate-tunneling-url/#ngrok)

* [Localtunnel](https://docs.catalyst.zoho.com/en/tools/tunneling/implementation/generate-tunneling-url/#localtunnel)

* [Serveo](https://docs.catalyst.zoho.com/en/tools/tunneling/implementation/generate-tunneling-url/#serveo)

* [Localhost.run](https://docs.catalyst.zoho.com/en/tools/tunneling/implementation/generate-tunneling-url/#localhostrun)

* [Pagekite](https://docs.catalyst.zoho.com/en/tools/tunneling/implementation/generate-tunneling-url/#pagekite)

2. [Deploy the functions](https://docs.catalyst.zoho.com/en/cli/v1/deploy-resources/deploy-functions/) you wish to tunnel to the [Catalyst console](https://console.catalyst.zoho.com/baas) in the [development environment](https://docs.catalyst.zoho.com/en/deployment-and-billing/environments/development-environment/) from your local project environment with the CLI.
![catalyst_tunneling_serverless_functions_list](https://catalyst-docs-development.zohostratus.in/images/catalyst-extension/tunneling/catalyst_tunneling_serverless_functions_list.webp)

To debug your non-HTTPS and Integration functions using Catalyst Tunneling you need to implement the following steps:

1. [Generate Tunneling URL](https://docs.catalyst.zoho.com/en/tools/tunneling/implementation/generate-tunneling-url/)
2. [Configure Tunneling in the Console](https://docs.catalyst.zoho.com/en/tools/tunneling/implementation/config-tunneling-console/)
3. [Launch Catalyst functions shell and begin Tunneling](https://docs.catalyst.zoho.com/en/tools/tunneling/implementation/launch-tunneling/)
4. [Configure IDE's debugger to start debugging your functions](https://docs.catalyst.zoho.com/en/tools/tunneling/implementation/ide-config/java/)
5. [Debug the Tunneled functions](https://docs.catalyst.zoho.com/en/tools/tunneling/implementation/debug-tunneled-func/java/)

The upcoming help sections contain detailed instructions on completing the above-mentioned steps.